High end digital reverberators
and effects

Others in the DPS range include the
DPS-M7 Sonic Modulator, DPS-D7 Delay and the
DPS-V77 which was a powerful multi-effects unit with digital i/o (albeit on a
non-standard proprietary connector) combining the best effects from the
DPS-*7 range.
Here are some of the manuals.
There was also the DRE-2000 Digital Reverberator, and the
DRE-S777 Sampling Reverb
which used sampled impulse responses of top concert halls and
acoustic spaces; it was incredibly expensive.

Other Sony pro-audio gear

As well as two other cheaper effects units (DPS-V55 and HR-MP5),
Sony also made the following units, none of which I own or have ever used - I
just list them here for completeness: (their website links broke though)